190020646 has 8 divisors (see below), whose sum is σ = 285476184. Its totient is φ = 94861920.

The previous prime is 190020629. The next prime is 190020647. The reversal of 190020646 is 646020091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×190020646² = 72215691812514632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190020647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72595 + ... + 75166.

It is an arithmetic number, because the mean of its divisors is an integer number (35684523).

Almost surely, 2^190020646 is an apocalyptic number.

190020646 is a deficient number, since it is larger than the sum of its proper divisors (95455538).

190020646 is a wasteful number, since it uses less digits than its factorization.

190020646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148406.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 190020646 is about 13784.7976408796. The cubic root of 190020646 is about 574.9105302507.

The spelling of 190020646 in words is "one hundred ninety million, twenty thousand, six hundred forty-six".